We would like to adjust our ANOVA-type analysis by using the
covariate "age". Because limma is based on contrast, rather than
"type III SS", it seems to me that the only way to proceed with an
ANCOVA-type analysis is to orthogonalize the design matrix against
the covariate. Is there a more straight-forward method?
Naomi S. Altman 814-865-3791 (voice)
Associate Professor
Dept. of Statistics 814-863-7114 (fax)
Penn State University 814-865-1348 (Statistics)
University Park, PA 16802-2111